Leases Balance Sheet Information (Details) - USD ($)	Jul. 31, 2019	Feb. 01, 2019	Jan. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 3,121,000	$ 3,807	$ 0
Operating Lease, Liability, Current	1,721,000
Operating Lease, Liability, Noncurrent	1,951,000
Operating Lease, Liability	3,672,000
Property, plant and equipment, net	104,654,000		$ 106,615,000
Finance Lease, Liability, Current	343,000
Finance Lease, Liability, Noncurrent	350,000
Finance Lease, Liability	693,000
Right of Use Asset, Financing Lease [Member]
Lessee, Lease, Description [Line Items]
Property, plant and equipment	873,000
Accumulated depreciation	(180,000)
Property, plant and equipment, net	$ 693,000